IOGear GBU421 Bluetooth 2.1 USB Micro Adapter, the IOGEAR Bluetooth 2.1 USB Micro Adapter offers Bluetooth connectivity at a fraction of the size of normal Bluetooth USB adapters. About the size of an adult fingernail, the IOGEAR Bluetooth 2.1 USB Micro Adapter allows users to connect to all the latest Bluetooth devices like cell phones, PDAs, mice and keyboards. Because the Micro Adapter is so small you can easily plug it into your computer without blocking any surrounding USB ports. The Micro Adapter also features Bluetooth EDR (Enhanced Data Rate) technology for transfer rates that are 3 times faster than traditional Bluetooth 1.1 and 1.2 adapters. The Micro Adapter also allows users to connect up to seven Bluetooth devices together and transfer even the largest files quickly and easily. With the Micro Adapter lower power consumption, you can enjoy longer battery life on your notebook computer. This Bluetooth Class 2 adapter is also compatible with both Mac and PC computers, and offers a wireless range of 30 feet (10 meter). It is great for both home and mobile networking needs.